Liabilities, Commitments And Contingencies (Narrative) (Details) (USD $) In Millions, unless otherwise specified															12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 C-17 Program [Member] aircraft	Dec. 31, 2012 C-17 Program [Member] USAF [Member] aircraft	Dec. 31, 2012 C-17 Program [Member] International [Member] aircraft	Dec. 31, 2012 Commercial Aircraft Commitments [Member] Total Contractual Trade In Value Maximum [Member]	Dec. 31, 2011 Commercial Aircraft Commitments [Member] Total Contractual Trade In Value Maximum [Member]	Dec. 31, 2012 Commercial Aircraft Commitments [Member] Net amounts payable to customers related to probable contractual trade-in commitments [Member]	Dec. 31, 2011 Commercial Aircraft Commitments [Member] Net amounts payable to customers related to probable contractual trade-in commitments [Member]	Dec. 31, 2012 Commercial Aircraft Commitments [Member] Probable Contractual Trade In Value [Member]	Dec. 31, 2011 Commercial Aircraft Commitments [Member] Probable Contractual Trade In Value [Member]	Dec. 31, 2012 Financing Commitment [Member]	Dec. 31, 2011 Financing Commitment [Member]	Dec. 31, 2012 ULA Additional Capital Commitment [Member]	Dec. 31, 2012 Minimum [Member]	Dec. 31, 2012 Maximum [Member]	Dec. 31, 2012 Environmental Remediation Expense [Member]	Dec. 31, 2011 Environmental Remediation Expense [Member]	Dec. 31, 2012 External Credit Rating, Non Investment Grade [Member] Financing Commitment [Member]
Liabilities Commitments And Contingencies [Line Items]
Amount by which estimated range of reasonably possible remediation costs exceeded recorded liabilities																	$ 865	$ 1,003
Other Commitment						1,535	273	108	30	108	27	18,083	15,866	494					17,014
Trade-In Commitment Expiration Date															2013	2023
Contingent liabilities on outstanding letters of credit agreements and surety bonds	4,545	6,199
Number of C-17 orders included in backlog				5	10
Loss contingency, estimate of possible loss			245
Number of unsold C-17 aircraft associated with inventory expenditures and potential termination liabilities			12
Cash surrender value of life insurance policies	423	397
Total value of loans against underlying life insurance policies	$ 400	$ 377